Grocery supplier pack mismatch calculator

Calculate initial backroom excess and days of total stock with your own figures.

Your numbers

Use the units shown. Results update as you change valid inputs.

Use initial backroom excess and days of total stock to compare changes to your inputs. The method and limits below explain the scope.

Examples

Examples

Try the starting example

Shelf capacity (units)
18
Supplier case size (units)
24
Forecast demand (units/day)
6
Cases received (count)
2
Initial backroom excess (units)
30
Days of total stock
8
Full-shelf depletion interval (days)
3

Try another scenario

Shelf capacity (units)
20
Supplier case size (units)
30
Forecast demand (units/day)
8
Cases received (count)
2
Initial backroom excess (units)
40
Days of total stock
7.5
Full-shelf depletion interval (days)
2.5
Calculation method

Calculation method

Initial backroom excess (units)

max(0,cases×case size−shelf capacity).

Days of total stock

Cases×case size/daily demand.

Full-shelf depletion interval (days)

Shelf capacity/daily demand.

Symbols and units
a
Shelf capacity (units)
b
Supplier case size (units)
c
Forecast demand (units/day)
d
Cases received (count)

Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.

Assumptions & limits

Assumptions & limits

  • One product, constant forecast demand; case stock placed on shelf up to capacity and excess held in backroom. Supported limits: All numeric inputs and computed intermediates must remain finite. Supported numeric input magnitude is zero or 1e-12 through 1e12 in absolute value; reject values outside this bounded range. All lists/JSON record tables are limited to 100 records unless a stricter bound is stated; reject malformed record arity and wrong member types. All numeric values must be finite. Lists contain at most 100 records; required lists must be nonempty. Rates, probabilities and fractions are entered as fractions, not percentages; fractions must be between 0 and 1. Use a single consistent user-selected currency for all amounts; no exchange-rate conversion.
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